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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: scientifically acceptable

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1992
Report date:
1992

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
measured
GLP compliance:
no
Type of method:
dynamic method

Test material

Constituent 1
Chemical structure
Reference substance name:
2-methylbut-3-en-2-ol
EC Number:
204-068-4
EC Name:
2-methylbut-3-en-2-ol
Cas Number:
115-18-4
Molecular formula:
C5H10O
IUPAC Name:
2-methylbut-3-en-2-ol
Details on test material:
Name of test material (as cited in study report):2-methylbut-3-en-2-ol
Analytical purity: 98.1 %

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
21.62 hPa
Remarks on result:
other: calculated from the regression equation
Temp.:
25 °C
Vapour pressure:
30.34 hPa
Remarks on result:
other: calculated from the regression equation
Temp.:
50 °C
Vapour pressure:
131.32 hPa
Remarks on result:
other: calculated from the regression equation

Any other information on results incl. tables

 Measured values:
temperature (°C) vapour pressure (hPa)

32.85
      50.00
38.54
      70.00
44.93
      100.0
58.44
      200.0
67.13
      300.0
79.05
      500.0
87.59
      700.0
97.33
      1000.0
97.80
      1006
117.52
      1910
132.19
      2930
152.37
      4973
165.78
      6783 The regression of the results leads with a mean deviation of 0.33 % to the following equation: ln(p/hPa) = 9.4172 - 2522.30 / (170.34 + t/°C) The vapour pressure at 20 °C, 25 °C and 50 °C was calculated from the regression equation.

Applicant's summary and conclusion